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Properties of Polydimethylsiloxane and Magnetoactive Polymers with Electroconductive Particles

  • Magnetoactive polymers are intelligent materials whose mechanical and electrical characteristics are reversibly influenced by external magnetic stimuli. They consist of a highly elastic polymer matrix in which magnetically soft and/or hard particles are distributed by means of special fabrication processes. In addition to ferromagnetic particles such as carbonyl iron powder, electrically conductive particles may also be embedded into the polymer matrix. After characterizing a range of compounds, this work focuses on a comparison of the electrical properties and the suitability of various materials for applications, with particular emphasis on integration into 3D and 6D printing processes. 6D printing is based on the selective positioning of particles in a 3D polymer matrix with a further three degrees of freedom for a graduated dispersion of the particles at certain points and in desired directions. The aim is therefore to ensure that the polymers containing electroconductive tracks have the best possible electrical properties, that is, low resistivity but are still capable of being printed. A comparison between the traditionally used compounds containing graphite and carbon black is made for the first time. This latter is found to be greatly superior both in terms of electrical conductivity and applicability to 3D printing and 6D printing.

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Metadaten
Author:Nina PremORCiD, Jhohan ChavezORCiDGND, Valter BöhmGND, Dirk SindersbergerORCiD, Gareth J. MonkmanORCiDGND, Klaus Zimmermann
DOI:https://doi.org/10.1002/macp.201800222
Parent Title (English):Macromolecular Chemistry and Physics
Publisher:Wiley
Document Type:Article
Language:English
Year of first Publication:2018
Release Date:2022/04/05
Tag:3D printing; 6D printing; STRAIN, *MRU; carbon black; composites; electroconductive particles; graphite; magnetoactive polymers; polydimethylsiloxane
Volume:219
Issue:18
Article Number:1800222
Institutes:Fakultät Elektro- und Informationstechnik
Fakultät Maschinenbau
Fakultät Maschinenbau / Labor Finite-Elemente-Methode (FEM)
Fakultät Elektro- und Informationstechnik / Mechatronics Research Unit (MRU)
Begutachtungsstatus:peer-reviewed
research focus:Sensorik
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG